Saw for linter machines



24, I H. TATJE saw FOR LINTER MACHINES Filed May 5. 24

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oh i a w I IN VENTOR A TTORNE Y Patented Feb. 24, 1925. p I 1,527,759

UNITED FFICE.

HERMAN TATJE, OF BRQOKLYN, NEW YORK.

$AW FOR LINTER MACHINES.

Application filed May 5, 1924. Serial No. 711,133.

To all whom it may concern. Another object is to provide a cheaper Be it known that I, HERMAN TATJE, a citiand more convenient means of attaching the Zen of the United States, and a resident of blade elements to the carrier disk.

Brooklyn, in the county of Kings and State With these and otherobjects in view, my

of New York, have invented a new and use invention consists in certain novel features 55 ful Improvement in Saws for Linter Maof construction, combination and arrangechines, of which the following is a full, clear, ment of parts which will be more fully deand exact description. scribed and pointed out in the claims.

This invention pertains to saws for linter In the accompanying drawings:

machines and it is my object to provide a Figure 1 is a face view of my improved construction of saws which is an improvesaw, mounted on the arbor of a linter mament over the construction shown in my Patchine and partly broken away to show cerent No. 1470779, issued October 16, 1923. tain'details;

Linter machines, as commonly construct- Fig. 2 shows a fragment of the saw reped, are provided with a large number of disk resenting a section taken on line22 of 65 saws mounted very closely together upon a Fig. 15' shaft or arbor. Owing to the fact that the Fig. 3 shows a cross section taken on line saw disks must necessarily be thin, it is difii 33 of Fig. 1; cult to harden them without warping of the Fig. 4 is a view of a fragment of a saw disks and such warping would be very ,disblade element partly broken away to show 70 advantageous because of the close proximity certain details, of one saw to another. Consequently the Fig. 5 is a fragment of the disk which carsaws are not hardened and wear out rapidly ries the saw blade sections; in service. 7 a i Fig. 6 is a view of a tool used in ap ly- The object of the present invention and ing the saw blade elements to the disk, and 7 also of that disclosed in my previous patent, Fig. 7 illustrates the method of using the above cited, is to provide carrier disks of tool in applying the saw blade elements to comparatively soft material with saw blades thedisk. secured thereto which blades are subjected In 1, I have shown an arbor of a linto the properheat treatment to render them ter machine at 10. Mounted on this arbor tough and resistant to wear. This makes it and keyed thereto is adisk 11. At diametriunnecessary to stop the linter machine frecallyopposite sides oft-he disks, a notch 12 quently to replace worn out blades. Furis formed therein. This'notch, as indicated thermore, if a blade breaks, it may be re in Fig. 5, is of dovetail form, the side walls placed without necessitating replacement of 13 of the notch being inclined and 'underthe disk which carries the blade. cut. 7

While this result was obtained in my pre- Mounted on the disk 11, are two semi-cirviously patented invention, the construction cular saw blade elements 14 and 15, which possessed the drawback that it was impossiare of identical construction. Each element ble to replace a saw blade without removing comprises one or more saw blades 16, formed the carrier disk from the arbor and if a with teeth 17 and clamped between a pair of break occurred in the center of the group semi-circular side plates 18 riveted or spot of saws, all the saw disks up to and includwelded thereto, as indicated at 19. Plates ing broken saw, had to be removed from the 18 overlap the blades 16 alongthe inner pc- 45 arbor before a new blade element could be riphery thereof so that between. the plates affixed to replace the broken one. on each side of the blade a recess is formed It is an object of the present invention to which is adapted to receive the edge of disk provide a construction whereby blade ele- 11. It will he understood of course, that the ments can be replaced without removing the toothed outer periphery of the blades 16 pro- 50 carrier disks from the arbor. jects beyond the side plates 18.

plates to the blade,

-The teeth 17 of the saw blades are inclined in the direction of rotation of the saw this direction being indicated by an arrow in Fig. 1. At the forward end of the saw blade element or that end toward which the saw teeth are inclined, the saw blade is provided with a toe piece 20 which projects inwardly and is formed with an undercut or inclined rear wall 21 adapted to tit against one of the inclined walls 13 of one of the notches 12. As this end of the saw takes the principal thrust when the saw is in service, the blade is securely riveted to the side plates 18 by means of rivets 22'and 23. At the opposite end of each saw blade element, is a heel 2 which is an extension similar to the toe piece 20, having an inclined wall at one side adapted to match one of the inclined walls of the notch 12. At the heel, the saw, blade is secured to the side plates by means of a single rivet 25 which is located near the outer periphery of the plates.

By referring to Figs. 1. and 3 it will be observed that the saw blade at tie toe end projects slightly beyond the side plates 18, while at the heel end the side plates project slightly beyond the blade, so that when the blade sections are assembled on the disk there is a tongue and groove joint formed between the two elements.

In applying the blade elements to a disk the toe pieces are first inserted in the slots 12 with the wall 21 of each toefpiece bear- I .ing against one of the inclined walls 13. The

elements are then fitted upon the disk with the side plates 18 overlapping opposite faces of the disks. Because at the heel end a single rivet 25 is used to attach the side one of the plates may be sprung slightly away from the heel sulficiently to admit the edge of the disk. The element is then drawn snugly against the disk until the heel 2% is brought into alinement with the notch 12 when it will snap into said notch, hooking against one of the shoulders 13, thereby locking the element securely upon the disk.

To assist in drawing the element into this locked position, I provide a hole 26 in the disk 11 under each notch 12 and a hole 27, in each saw blade element near the heel. I then employ a tool consisting of a bar 29 formed at one end with a pin 30 and having a link 31 pivoted to the bar near the pin. The link 31 terminates in a projection 32. The pin 30 is inserted in the hole 26 and the projection 32 in the hole 27, then upon operating the bar 29 as a lever with the pin 30 as fulcrum the saw blade element may be drawn into position with the heel engaging slot 12 and the side plates 18 at the heel of one saw blade element, overlapping the toe of adjacent blade. When thus applied, the saw blade elements are firmly secured to the carrier disk '11.

The thrust on each saw blade element is taken by the toe piece 20 and owing to the two rivets 22 and 23 which secure it rigidly to the side plates 18, it cannot be removed from the disk by lateral displacement. At the heel end where the thrust is comparatively negligible lateral displacement will be prevented by the side plates 18 which spring back into place snugly against the heel 24 as soon as it has snapped into the notch 12. hen a saw blade is broken or worn out and it is necessary to replace a saw blade element with a new one, it may be removed from the disk 11 by bending up one of the side plates at the heel of the blade element and moving the heel out of engagement with theside wall 13 of the notch 12. V I

For purposes or economy in manufacture, it may be desirable to element of a number of separate saw blades, which can very readily be done, owing to the fact that the blades are rigidly secured by spot welding or by means of rivets to the side plates 18. As lines in Fig. 1, I have shown each saw blade element made up of two blades but if desirable the elements may be made of a single blade or of more than two blades.

It will be evident also, that instead ofusing two semi-circular blade elements 141 and 15 a single blade clement might be employed, which would be of annular form but open ended with a toe piece at one end and a heel piece at the other end, in such case the disk 11 will be formed with a single notch.

I claim:

1. A saw for linter machines compris ng a carrier plate formed with notches, a saw blade element formed with a recess to receive the edge of the plate, and means on the blade element at opposite ends of the recess for interlocking with said notches.

2. A saw for linter machines comprising a carrier plate formed with hooks in its edge, and a saw blade element formed with hooks adapted to interlock with the aforesaid hooks, said blade element being further formed with extensions at each side adapted to overlap an edge of the carrier plate on opposite sides thereof.

3. A saw for linter machines comprising a carrier plate formed with hooks in its edge, a saw blade element formed with a mort se at one end, a tenon at the other end of the element, hooks on said element adapt ed to engage the aforesaid hooks, side plates on said element adapted to overlap an edge of the plate on opposite sides thereof. e

4. A saw for linter machines comprising a carrier plate formed with notches having undercut side walls and a blade element formed with a recess into which an edge of the plate may be fitted, said recess terminatform each saw blade:

indicated by dotted ing in inwardly i nolined walls adapted to interlock with the wallsof said notch-es,

5. A saw fon linter'machinescomprising a disk formed with undercut notches, and a plurality of arcuate blade sections, each formed with a recess adapted to receive the edge of the disk, the recess terminating at each end in inwardly inclined walls adapted to interlock with the notches.

6. A saw for linter machines comprising a disk formed with undercut notches, an arcuate saw blade, arcuate plates secured on opposite sides of the blade and overlapping the inner periphery thereof to form a recess adapted to receive the edge of the disk and inwardly extending undercut projections on the blade at each end adapted to engage said undercut notches.

7. A saw for linter machines comprising a disk formed with an undercut notch, a plurality of arcuate blade sections, a plurality of arcuate side plates overlapping the inner periphery of the blade sections and adapted to overlap the edge of the disk and inwardly extending undercut projections at each end of the blade element adapted to interlock with said notches.

8. A saw for linter machines comprising a disk formed with undercut notches and a blade element comprising an arcuate saw blade, arcuate plates secured on opposite sides of the blade and overlapping the inner periphery of the blades to form a recess for the reception of the disk, a toe piece at the forward end of the blade securely riveted to the side plates and a heel at the rear end of the blade with its lower end unattached to the side plates, said toe piece and heel respectively being adapted to interlock with the notches in the disk.

9. A saw for linter machines comprising a disk formed with undercut notches and a blade element compris ng an arcuate saw blade, arcuate plates secured on opposite sides of the blade and overlapping the inner periphery of the blade to form a recess for the reception of the disk, a toe piece at the forward end of the blade securely riveted to the side plates and a heel at the rear end of the blade with its lower end unattached to the side plates, said toe piece and heel respectively being adapted to interlock with the notches in the disk, the blade at the toe end projecting beyond the side plates to form a tenon and the side plates at the heel projecting to form a groove for the reception of the tenon.

10. A saw for linter machines comprising a disk formed with undercut notches and a blade element comprising an arcuate saw blade, arcuate plates secured on opposite sides of the blade and overlapping the inner periphery of the blades to form a recess for the reception of the d sk, a toe piece at the forward end of the blade securely riv- 'heel respectively the blades projecting 'etedto theside plates and a heel at the rear end of the blade with its lower end unattachedto. the side plates, saidtoe piece and being adapted to interlock with the notches in the disk, theblade at the toe end projecting beyond the side plates toforni a tenon and the side platesat the heel projecting to form a groove for the reception of the tenon, the blade element and the carrier plate being each formed to receive a tool for drawing the blade element into position upon the disk.

11. A blade element for a linter saw comprising an open ended annular saw blade, side plates secured on opposite sides of the blade and overlapping the inner periphery of the blade to form a recess, and inwardly extending undercut projections on the blade at each end forming end walls for the recess.

12. A blade element for a linter saw comprising two open ended annular side plates, a plurality of arcuate saw blades clamped between the side plates with the toothed edge of the blades projecting beyond the side plates and the latter overlapping the inner periphery of the blades to form a re cess, and inwardly extending undercut projections on the blades at each end of the blade elementforming end walls for the recess.

13. A blade element for a linter saw com prising two open ended annular side plates, a plurality of arcuate saw blades clamped between the side plates with the toothed edge of the blades projecting beyond the side plates and the latter overlapping the inner periphery of the blades to form a recess, and inwardly extending undercut projections on the blades at each end of the blade element forming end walls for the recess, the extension at the forward end of the blade element being firmly secured to the side plates.

1.4. A blade element for a linter saw co1nprising two open ended annular side plates, a plurality of arcuate saw blades clamped between the side plates with toothed edge of and the latter overlapping the inner periphcry of the blades to form a recess, inwardly extending undercut projections on the blades at each end of the blade element forming end walls for the recess with the projection at the forward end of the blade element firmly secured to the side plates while the projection at the rear end is unattached to the side plates to permit of springing the side plates away from the projection, a tenon at one end of the blade element, and a mortise at the other end of the blade element.

15. A blade element for a linter saw comprising two open ended annular side plates, a plurality of arcuate saw blades clamped between the side plates with toothed edge of the blades projecting beyond the side plates beyond the side plates and the latter overlapping the inner periphery of the blades to form a recess, inwardly extending undercut projections on the blades at each end of the blade element 5 forming end Walls for the recess with the projection at the forward end of the blade element firmly secured to the side plates While the projection at the-rear end is unattached to the sideplates to permit of springing the side plates away from the projection, the blade element being also formed with means for attaching a tool thereto.

- HERMAN TATJE. 

